Former Rep. Mark Neumann announced he won't seek a formal endorsement for his gubernatorial campaign at the Wisconsin GOP convention on May 22. Neumann's competing for the Republican nomination with Milwaukee County Executive Scott Walker, whose establishment support already made him the heavy favorite to win the party endorsement. The two candidates will compete in a primary on Sept. 14.

Wisconsin's Republican gubernatorial candidates are hosting dueling fundraisers in Washington Tuesday, with Milwaukee County Executive Scott Walker's establishment support expected to be on full display. Walker's event is hosted by the entire Wisconsin congressional delegation, as well as former Gov. Tommy Thompson and former Sen. Bob Kasten. Neumann's, on the other hand, will feature Oklahoma Sen. Tom Coburn, who's endorsed Neumann's campaign.

A staffer for former Republican Rep. Mark Neumann's gubernatorial campaign was caught spreading rumors over email that fellow Republican Milwaukee County Executive Scott Walker planned to drop out of the race and run for lieutenant governor on Neumann's ticket. A spokesman for Neumann acknowledged: "It's not something that should have gone out and Mark is making sure it doesn't happen again."